Single-section-strut-supported door.



y J. E. OGDEN.

SINGLE SECTION STRUT SUPPORTED DOOR.

APPLICATION FILED AUG.I. |9I7.

Patented Aug. 6, 1918Y |ll| IIIIIIlI/I/IIIIIIIII l ,K5/Zw; m

UNITED STATES PATENT OFFICE.

JOHN EDWARD OGDEN, F CORNWALL, NEW YOB? SINGLE-SECTION-STRUT-SUPPORTE DOOR.

. \To all 'whom t may coaoem.'

A1li

y Be it known that I, J oHN EDWARD OGDEN, a citizen of the United States of America, and a resident of Mountainville, town of Cornwall, Orange county, and State of New York, United States of America, have invented certain new and useful Improvements in Single-Section-Strut-Supported Doors, of which the following is a speciication, reference bein had to the accompanying/[drawings formlng a part thereof.

- y invention relates to new and useful improvements in doors and especially to such as are adapted to close large openings such as those in pier sheds, warehouses, and the like, and its object is to provide a single section strut supported door of simple con.-

struction which shall be easy to operate.

. Another object is to so construct the parts that during the operation but little clearance is necessary.

Another object is to so construct the parts that the door section need not be pivoted at points materially above the opening and to so construct and proportion the parts that the struts will firmly support the door section in its raised or open `position without las obstructing the door opening.

Illlllorder that my invention may be thor- Oug v describe the same in the following specificaa tion and then point out the novel features ,thereof in appendedclaims.

'Referring to the drawin Figure 1 is sectional si e elevation of a door made according to and embodying this invention with the parts shown in broken lines in their raised or op position.

Fi 2 isa similar view of a door of modified orm of construction.

Like characters of reference designate cory responding parts in all the res.

10' desi ates one of the si e framesof a door opening and 11 its lintel. The door section 12 is pivotally supported atthe part of the door frame by hin es 13 and extends down-to the lioor,14.. ivotally connected with the vertical edges of the door section at 15 are struts 16 in the lower ends ofwhich.

are rollers 17. These run in substantially vertical guides 18 which in the arrangement shown in Fig. 1 are on the outside of the building at the sides of the door opening.

Hoisting chains 20 are ailixed to the struts-preferabl near the rollers 17. These chains run un an over pocket sheaves 21 on understood I will now proceed to.

Specication of Letters Patent. lPatented Aug, 6, 1918, `Application tiled August 1, 1917. l Serial No. 188,899. I

tained by this movement will force the door section outwardly and cause it to swing about the hinges 13 until it has reached a substantially horizontal position, as shown by the broken lines. In this position the struts are in position to serve as braces for the door section to hold it firmly and securely in such a position that it acts as a canopy over `the door opening. The struts are beyond the side posts of the door opening so they do not obstruct the opening.

A reversal of the operation just described will close thedoor.

In the arrangement shown in Fig. 2 the Yroller `guides 18A are at the sides of the door opening inside of the building. They do not as in the structure shown in Fig. 1, extend below the level of the :door 14. In this case it is desirable to have the pivotal `connections between 'the struts 16 and the edges of the door section somewhat above the center of the door section so that when the latter'is raised as shown in broken lines, the struts will assume an oblique angle and thus securely brace the door section.

What I claim is: a

1. A door .section hinged at ,the upper edge-of a door opening, brackets at the edges thereof, downwardly extending struts having their upper ends pivoted to said brackets, means, for guiding the lower ends of the struts in ay substantially vertical directlon, the pivotal connection ofthe upper ends of the struts with the brackets being offset from said guiding means, hoisting mechamsm, iiexible elements connecting said holsting mechanism with the lower parts of the struts, said struts being arranged to support the door section in its swung .positlon wlthout obstructing the door openlng.

2. A' door section hinged at the upper edge of a door opening and arran d to swing outwardly, 4 outwardly proJecting brackets at the edges thereof downwardl extending struts having their upper en s pivoted to said brackets, vertical guides for swung position without obstructing the door the lower ends of the struts, extendingv beopening.

low the door opening, the pivotal connec- In witness whereof I have hereunto set my tionfof the upper ends of the struts with the hand this 30th day of July, 1917.

5 brackets being iset from said guides hoistin mechanism, flexible elements connecting JOHNEDWAR-D OGDEN' said hoisting mechanism with the lower Witnesses: parts of 'the struts, said struts being ar- I. B. MOORE, Viangg'ed t0 support the door section in its WILLIAM G. DAUroN. 

